Editing Emitter-coupled logic (section)

== Characteristics ==

Other noteworthy characteristics of the ECL family include the fact that the large current requirement is approximately constant, and does not depend significantly on the state of the circuit.  This means that ECL circuits generate relatively little power noise, unlike other logic types which draw more current when switching than quiescent. In cryptographic applications, ECL circuits are also less susceptible to [[side channel attack]]s such as [[differential power analysis]].{{citation needed|date=December 2018}}

The [[propagation delay|propagation time]] for this arrangement can be less than a nanosecond, including the signal delay getting on and off the IC package. Some type of ECL has always been the fastest logic family.<ref>John F. Wakerly. Supplement to Digital Design Principles and Practices. Section [http://www.ddpp.com/DDPP4student/Supplementary_sections/ECL.pdf "ECL: Emitter-Coupled Logic"].
</ref><ref>{{cite book |last1=Sedra |last2=Smith |title=Microelectronic Circuits |date=2015 |chapter-url=http://global.oup.com/us/companion.websites/fdscontent/uscompanion/us/static/companion.websites/9780199339136/pdf/Additional_Material.pdf |chapter=Emitter-Coupled Logic (ECL) |page=47 |publisher=Oxford University Press |isbn=978-0-19-933913-6}}</ref>

[[Radiation hardening]]:  While normal commercial-grade chips can withstand 100 [[Gray (unit)|gray]] (10 krad),  many ECL devices are operational after 100,000 gray (10 Mrad).<ref name="verkasalo">{{cite web| title = Protection of Instrument Control Computers against Soft and Hard Errors and Cosmic Ray Effects | url=https://www.researchgate.net/publication/27782054 | first1 = Kari | last1 = Leppälä | first2 = Raimo | last2 = Verkasalo | date = 1989 }}</ref>